Characterizing bright δ Scuti pulsators using TESS light curves
Article
| Article Title | Characterizing bright δ Scuti pulsators using TESS light curves |
|---|---|
| ERA Journal ID | 1074 |
| Article Category | Article |
| Authors | Mani, Prasad, Bedding, Timothy R., Bernizzoni, Mara, Murphy, Simon J. and Hey, Daniel |
| Journal Title | Monthly Notices of the Royal Astronomical Society |
| Journal Citation | 542 (4), pp. 2866-2876 |
| Number of Pages | 11 |
| Year | 2025 |
| 01 Oct 2025 | |
| Publisher | Oxford University Press |
| Place of Publication | United Kingdom |
| ISSN | 0035-8711 |
| 1365-2966 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/staf1400 |
| Web Address (URL) | https://academic.oup.com/mnras/article/542/4/2866/8241353 |
| Abstract | We present a study of bright, young δ Scuti stars near the zero-age main sequence using TESS light curves and Gaia DR3 data. From a sample of 2041 stars with G < 7 and GBP − GRP colour in the range 0–0.6, we identified 444 δ Scuti pulsators. We measured a pulsator fraction of ∼70 per cent in the middle of the instability strip, tapering off towards the edges. A period–luminosity diagram reveals a concentration along the fundamental mode and overtone ridges. We addressed sample completeness and identified low-frequency pulsators possibly exhibiting mixed modes. Cross-matching with nearby young associations showed that 63 δ Scuti stars from our sample are association members. |
| Keywords | parallaxes – stars; oscillations – stars; variables; Scuti |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
| Byline Affiliations | University of Sydney |
| Centre for Astrophysics | |
| University of Hawaii, United States |
https://research.usq.edu.au/item/101514/characterizing-bright-scuti-pulsators-using-tess-light-curves
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